NATIONAL LABOR REL. BOARD v. HEILIG BROS. CO

William J. Isaacson, of Washington, D.C. (Robert B. Watts,

Counsel, Laurence A. Knapp, Associate

Counsel, Ernest A. Gross,

Counsel, Ruth Weyand,

Harry G. Carlson,

, National Labor Relations Board, all of Washington, D.C., on the brief), for

John F. Dumont, of Little Falls, N.J. (John A. Hoober, of York, Pa., on the brief), for